Tractable Quantification of Entanglement for Multipartite Pure States
Nian-Quan Jiang, Wang Yu-Jian, Yi-Zhuang Zheng, Gen-Chang Cai · Chinese Physics Letters · 2008
We present kth-order entanglement measure and global kth-order entanglement measure for multipartite pure states, and extend Bennett's measure of partial entropy for bipartite pure states to a multipartite case. These measures are computable and can effectively classify and quantify the entanglement of multipartite pure states.